Journal
CARBON
Volume 132, Issue -, Pages 598-605Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2018.02.107
Keywords
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Funding
- Scientific Research Foundation for the Returned Overseas Hebei Province [C2013001055]
- Natural Science Foundation of Hebei Education Department [QN2015220]
- National Nature Science Foundation of Hebei Province [B2016210111]
- Training Program for Leading Talent in University Innovative Research Team in Hebei Province [LJRC006]
- State Education Ministry and Hebei Key Discipline Construction Project
- Ministry of Science and Technology of China [2016YFA 0200101, 2016YFA0200104]
- National Natural Science Foundation of China [51432002, 21129001, 21233001, 51502007, 51672007]
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Ag3PO4 nanoparticles are often considered to be a fascinating and efficient visible photocatalyst because of its high quantum efficiency and excellent activity of O-2 generation from water oxidation. However, the photo-corroded phenomenon and stability during the photocatalytic process reduce the photocatalytic activity. To overcome these disadvantages, strategies of combining Ag3PO4 with two-dimensional materials have been put forward to improve its stability and photocatalytic properties under visible-light irradiation. In this work, a novel Z-scheme Ag3PO4/graphdiyne/g-C3N4 nanocomposite was constructed via a simple electrostatic and pi-pi stacking interaction for the first time. Significantly, such Z-scheme nanostructures show highly oxygen evolution, and 753.1 mu mol g(-1) h(-1) of O-2 was produced with Ag3PO4/graphdiyne/g-C3N4, which was 12.2 times higher than that of Ag3PO4 nanoparticles. Graphdiyne with pi-conjugated structure of sp(-) and sp(2)-hybridized carbon atoms, can not only act as conductive electron mediator bridges to collect photogenerated electrons and boost the O-2 evolution kinetics, but also used as a promising substrate for stabilizing Ag3PO4 in the composite. (c) 2018 Elsevier Ltd. All rights reserved.
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